Crowfoot Formation

Crowfoot Formation Stratigraphic range: Frasnian PreЄ Є O S D C P T J K Pg N
Type	Geological formation
Underlies	Stettler Formation
Overlies	Southesk Formation
Thickness	up to 38 metres (120 ft)[1]
Lithology
Primary	Anhydrite, dolomite
Other	Shale
Location
Named for	Crowfoot Creek
Named by	H.R. Belyea and D.J. McLaren, 1957
Coordinates	50°44′53″N 112°35′13″W / 50.748°N 112.587°W / 50.748; -112.587 (Crowfoot Formation)Coordinates: 50°44′53″N 112°35′13″W / 50.748°N 112.587°W / 50.748; -112.587 (Crowfoot Formation)
Region	WCSB
Country	Canada

The Crowfoot Formation is a stratigraphical unit of Frasnian age in the Western Canadian Sedimentary Basin.

It takes the name from Crowfoot Creek, a tributary of the Bow River and was first described in the Royalite Crowfoot No. 2 well, located near the creek by H.R. Belyea and D.J. McLaren in 1957. ^[2]

Lithology

The Crowfoot Formation consists of anhydrite, silty dolomite, with minor shale. ^[1]

Distribution

The Crowfoot Formation is typically 4 metres (10 ft) thick, but can reach up to 38 metres (120 ft).^[1]

Relationship to other units

The Crowfoot Formation is overlain by the Stettler Formation and overlays the Southesk Formation.^[1]

It is equivalent to the Calmar Formation and part of the Graminia Formation in central Alberta and to the Torquay Formation in Saskatchewan, Manitoba and Montana.

References

1. ^ ^{a b c d} Lexicon of Canadian Geologic Units. "Crowfoot Formation". http://cgkn1.cgkn.net/weblex/weblex_litho_detail_e.pl?00053:003592. Retrieved 2010-01-01. 
2. ^ Belyea, H.R. and McLaren, D.J., 1957. Upper Devonian nomenclature in southern Alberta. Journal of the Alberta Society of Petroleum Geologists, v. S. p.166-182.